| 000 | 00474nam a2200145 a 4500 | ||
|---|---|---|---|
| 005 | 20220228110810.0 | ||
| 035 | _aF8901000719973 | ||
| 084 | _aEPA R2-73- 135 1973 | ||
| 100 | _aChung, Neville K. | ||
| 245 | _aInvestigation of use of gel material for mine sealing / by -Neville K. Chung | ||
| 260 | _aWashington, D.C. : Environmental Protection Agency | ||
| 300 | _a[76] p. | ||
| 440 | _aEnvironmental protection technology series EPA-R2-73-135 | ||
| 690 | _aMinas - Sellado | ||
| 999 |
_c65840 _d65840 |
||